Estimating Crop and Reference Evapotranspiration and Crop Factor and Some Growth Indicators for Wheat and Barley in Dhi Qar Governorate Using the CropWat Program

Authors

  • Yahya Ajib Oudah Al-Shami

    Department of Animal Production, College of Agriculture, University of Misan, Misan 62001, Iraq
  • Muntadher Hammadi Al-Budeiri

    Department of Soil and Water Resources, College of Agriculture, Wasit University, Al-Kut 52002, Iraq

DOI:

https://doi.org/10.30564/jees.v7i1.7451
Received: 8 October 2024 | Revised: 21 October 2024 | Accepted: 22 October 2024 | Published Online: 2 December 2024

Abstract

Information about the average water consumption or evapotranspiration of crops is the basis for scheduling irrigation and the water requirements of plants, and choosing the appropriate crops for the region in light. This experiment was carried out to evaluate and calculate the ability of the CropWat program to estimate evapotranspiration rates, and plant consumptive water use for strategic crops in Iraq, including wheat and barley in Dhi Qar Governorate. The results of the study showed that the maximum root depth ranged between 1.20 m, and 1.10 m in the distance between the vegetative growth and flowering stages for wheat and barley crops, respectively. It was also noted that the crop evapotranspiration (ETc) values decreased at the beginning of the growing season, ranging from 0.79 mm day–1 to 1.57 mm day–1 for wheat and barley crops, respectively. Then, the values increased with the progress of the growing season and the increase of the vegetative mass of the plants, reaching 3.72 mm day–1 and 3.46 mm day–1 for wheat and barley crops, respectively. The reference evapotranspiration (ETo) values were also low in the first months of the year and were around 2.1 mm day–1 at the beginning, then gradually increased with the progress of the months of the year, reaching the maximum reference evapotranspiration values of 10.5 mm day–1 in the seventh month, and then the values decreased at the end of the season for wheat and barley crops.

Keywords:

Evapotranspiration; Irrigation Scheduling; Water Consumption; Crop Factor

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How to Cite

Yahya Ajib Oudah Al-Shami, & Hammadi Al-Budeiri, M. (2025). Estimating Crop and Reference Evapotranspiration and Crop Factor and Some Growth Indicators for Wheat and Barley in Dhi Qar Governorate Using the CropWat Program. Journal of Environmental & Earth Sciences, 7(1), 225–235. https://doi.org/10.30564/jees.v7i1.7451

Issue

Vol. 7 , Iss. 1 (January 2025): In Progress

Article Type

Article

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Copyright © 2025 Yahya Ajib Oudah Al-Shami, Muntadher Hammadi Al-Budeiri

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This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.

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